Example image of eyePlorer eyePlorer map for 'Washington Territory': 1853 1889 February 8 November 11 Organized incorporated territories of the United States United States Washington 46th parallel north Columbia River Oregon boundary dispute Oregon Territory Oregon Treaty George Washington Kentucky Richard H. Stanton United States House of Representatives Isaac Stevens Olympia, Washington Continental divide Idaho Montana Nebraska Territory Oregon Ravalli County, Montana Wyoming 117th meridian west Idaho Territory Snake River U.S. state Dakota Territory Historic regions of the United States Jefferson Territory List of Governors of Washington Montana Territory Provisional Government of Oregon State of Deseret Territorial evolution of the United States Territories of the United States Wyoming Territory 1st Regiment Washington Territory Volunteer Infantry Alvan Flanders Arthur A. Denny Bear River Massacre Charles H. Mason Charles Stewart Voorhees Columbia Lancaster Edward S. Salomon Eugene Semple Fort Simcoe George Anson Meigs
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